Facile modification strategies on hydrochar-based carbon particles with hydrothermal carbonization from green pistachio hulls for the removal of cadmium ions from aqueous solutions

被引：7
作者：
Oc, Sema [1 ]
Tegin, Ibrahim [1 ]
Yabalak, Erdal [2 ]
Saka, Cafer [3 ]
机构：
[1] Siirt Univ, Fac Sci & Letters, Siirt, Turkiye
[2] Mersin Univ, Tech Sci Vocat Sch, Mersin, Turkiye
[3] Siirt Univ, Fac Hlth Sci, Siirt, Turkiye
来源：
BIOMASS CONVERSION AND BIOREFINERY | 2025年 / 15卷 / 03期
关键词：
Pistachio green hull; Hydrothermal treatment; Hydrochar modification; Adsorption; ACTIVATED CARBON; HEAVY-METALS; ADSORPTION; BIOCHAR; CD(II); CU(II); PB(II); LEAD;
D O I：
10.1007/s13399-023-05242-1
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The aim of this study is based on the efficient removal of cadmium ions (Cd2+) from aqueous solutions with the adsorbent obtained by various modification strategies on hydrochar-based carbon particles obtained by hydrothermal carbonization from green pistachio hulls as a precursor. Hydrochloric acid (HCl), sodium hydroxide (NaOH), or phosphoric acid (H3PO4) were used to functionalize the surface to increase the adsorption capacity of hydrochar. Maximum Cd2+ adsorption capacity from environmental waters by PHHC-NaOH hydrochar at 298 K was found to be 526.31 mg/g. Surface morphology and chemical compositions of hydrochar were investigated by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), energy-dispersive spectroscopy (EDS), and thermogravimetric/differential (TG-DTA) and nitrogen adsorption/desorption analyses. Isotherm, kinetic, and thermodynamic properties were evaluated in detail. Also, possible mechanisms for Cd2+ binding on modified hydrochar were evaluated.
引用
收藏
页码：4527 / 4538
页数：12
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